Chemistry revision by Goldbert Dy https://padlet.com/goldbert_dy/hgbah1sonwdy en-us 2018-02-26 02:12:25 UTC 2018-02-26 02:53:37 UTC hello@padlet.com Activity 1 goldbert_dy https://padlet.com/goldbert_dy/hgbah1sonwdy/wish/235190981 As a group, type in everything you can remember from iGCSE Chemistry.
Use the names of the people in your group as the title for your post.]]> 2018-02-26 02:14:19 UTC https://padlet.com/goldbert_dy/hgbah1sonwdy/wish/235190981 https://padlet.com/goldbert_dy/hgbah1sonwdy/wish/235191032 2018-02-26 02:14:41 UTC https://padlet.com/goldbert_dy/hgbah1sonwdy/wish/235191032 Saifullah, Abishek, Anirud, Jewel saifullah_bahri https://padlet.com/goldbert_dy/hgbah1sonwdy/wish/235191235 Compounds
Electrons
Atoms
Evaporation
Dilute
Solute
Alloy
Ion
Atomic Number
Element 
Mass number
Mixture 
Protons 
Neutrons
Nucleus of an Atom
Periodic table 
Valency
Metal
Non Metal
Filtration
Solid
Liquid 
Gas
Water vapor
Ionic bond
Atomic Structure

]]> 2018-02-26 02:16:07 UTC https://padlet.com/goldbert_dy/hgbah1sonwdy/wish/235191235 Dina, Katarina, Lisa https://padlet.com/goldbert_dy/hgbah1sonwdy/wish/235191261 electrons, 
compounds
atoms
molecules
atomic structure
chemical reaction
protons 
neutrons
ionic compound
valency 
chemical formula 
elements
lattice structure
endothermic reaction
exothermic reaction
ionic bond
periodic table,all elements
metal, non-metal
evaporation
CO2
H2O
states of matter
solid, liquid,gas
stochiometry
energy
Mg0


]]> 2018-02-26 02:16:23 UTC https://padlet.com/goldbert_dy/hgbah1sonwdy/wish/235191261 Aleem, Eli, Khairul https://padlet.com/goldbert_dy/hgbah1sonwdy/wish/235191310 atomic structure and periodic table
ionic bonding 
proton, nutron, elcetron 
nucleus 
proton numbers
stoichiometry
compound
molecules
hydrogen
lithium
carbon
oxygen
sodium
isotopes 
nuclear number

Eli:
 1/what is ionic bonding?
 
2/ what is metal made of?

3/ what is atomic structure?


Aleem:
1) what is meant by a proton number?

2) What is valency of an atom?

3) How many groups are in the periodic table?


]]> 2018-02-26 02:16:42 UTC https://padlet.com/goldbert_dy/hgbah1sonwdy/wish/235191310 celina, syasya, iwan https://padlet.com/goldbert_dy/hgbah1sonwdy/wish/235191400
molecules 
atoms 
electrons
protons 
elements
nucleus atom 
ionic bond 
ionic compound - no overall reaction 
exothemic reaction = products + energy 
endothermic reaction - reactants + energy = products 
compounds 
stochiometry -
CO2 = carbon dioxide - one carbon , two oxygen 
H2O = hydrogen oxide -  2 hydrogen, one oxygen 
MgO- = Magnesium oxide - 1 magnesium, one oxygen 







]]> 2018-02-26 02:17:14 UTC https://padlet.com/goldbert_dy/hgbah1sonwdy/wish/235191400 Chihiro, Azad, Yi Shuen, HAdif https://padlet.com/goldbert_dy/hgbah1sonwdy/wish/235191444 Chemical Reaction, Air and water, the periodic tables, atoms elements and compounds, sulfur, stochiometry, ionic bonding, lattice structure, properties of metal

]]> 2018-02-26 02:17:34 UTC https://padlet.com/goldbert_dy/hgbah1sonwdy/wish/235191444 Activity 2 goldbert_dy https://padlet.com/goldbert_dy/hgbah1sonwdy/wish/235193254 Create five quiz questions based on everything you learnt so far in iGCSE Chemistry.]]> 2018-02-26 02:29:02 UTC https://padlet.com/goldbert_dy/hgbah1sonwdy/wish/235193254 Katarina https://padlet.com/goldbert_dy/hgbah1sonwdy/wish/235193414 1.  What is an Atomic structure?
A: the structure of an atom, theoretically consisting of a positively charged nucleus surrounded 
and neutralized by negatively charged electrons revolving in orbits at varying distances from the nucleus.
2. How do you form a chemical formula?
A: step 1: write the symbol
step 2: write the valencies
step 3: swap the valencies
step 4: divide both valencies by the smallest valency number
step 5: write the formula
3.  How many groups are there in the periodic table?
A: 8 groups
4. What is the chemical formula for salt?
A: NACL
5. What is the difference between of Solid, Liquid, and Gas?
A: solid is all compacted together, liquid random pattern close to each other, gas random pattern very far away from each other

]]> 2018-02-26 02:29:52 UTC https://padlet.com/goldbert_dy/hgbah1sonwdy/wish/235193414 dina https://padlet.com/goldbert_dy/hgbah1sonwdy/wish/235193456 1. what is the chemical formula of salt.
A: NaCl
2. how many groups and periods are there in the periodic table?
A: groups=8   periods=7
3. what is the chemical formula of magnesium oxide?
A: MgO
4. how many electrons are there on the outer shell for oxygen?
A: 6 electron
5.What is the difference between a compound and a mixture. 
A: compound is when 2 or more elements are bonded together chemically and mixture is when 2 or more elements is combined without chemical means.]]> 2018-02-26 02:30:04 UTC https://padlet.com/goldbert_dy/hgbah1sonwdy/wish/235193456 Ani https://padlet.com/goldbert_dy/hgbah1sonwdy/wish/235193532 1)Which is positive?
a)Proton
b)Neutron
3)Electron
_______________________________
2)Which one of these uses Stain less metal?
a) Cutlery
b) Machine
c) Car chassis. (The main ridge structure of the car)
________________________________
3)What is Diffusion?
________________________________
4) What is meant by lower Concentration?
_______________________________
5)2+(-1)?
ans: +1, which will be a proton
_______________________________
Extension!
6)What is 'Permeable?'
ans: Permeable is a material that allows that water to pass through it.
]]> 2018-02-26 02:30:29 UTC https://padlet.com/goldbert_dy/hgbah1sonwdy/wish/235193532 Saifullah saifullah_bahri https://padlet.com/goldbert_dy/hgbah1sonwdy/wish/235193571 1.What process is used to separate salt and water?
A) Evaporation
2.What is meant by Solute?
3.What is the nucleus of an atom made of?
4. What is the charge for a Proton, Neutron and Electron?
5. What is 6+(-7)?]]> 2018-02-26 02:30:42 UTC https://padlet.com/goldbert_dy/hgbah1sonwdy/wish/235193571 Abishek https://padlet.com/goldbert_dy/hgbah1sonwdy/wish/235193578 1.what is meant by ionic bond?
2.How many groups are there in a periodic table?
a: 8 group
3.what is the chemical formula for radium?
A:Ra
4.where is nitrogen(N) in periodic table
A:Group 5, period 2
 5.how many electron does Lead(Pb) have]]> 2018-02-26 02:30:43 UTC https://padlet.com/goldbert_dy/hgbah1sonwdy/wish/235193578 jewel https://padlet.com/goldbert_dy/hgbah1sonwdy/wish/235193597 1.Which element comes first when combined with an atom?
An: from a metal to a non-metal
2.What ending would you give for a non-metal at the end?
An: with an -ide
3.How many groups are there in a Periodic Table?
An: 8
4.What are rows called in the Periodic Table?
An: periods
5.What are the signs of a chemical reaction?
An: bubbles, smell, colors, etc.]]> 2018-02-26 02:30:50 UTC https://padlet.com/goldbert_dy/hgbah1sonwdy/wish/235193597 lisa https://padlet.com/goldbert_dy/hgbah1sonwdy/wish/235193640 Q1. State 3 properties of liquid?
A1. Random pattern close to each other.
Slide over each over.
Medium energy.

Q2. Which has low melting point, metal or non-metal?
A2. non-metal 

Q3. What is a compound?
A3. A substance that contains 2 or more types of substance that is combined physically]]> 2018-02-26 02:31:01 UTC https://padlet.com/goldbert_dy/hgbah1sonwdy/wish/235193640 Hadif https://padlet.com/goldbert_dy/hgbah1sonwdy/wish/235193674 1. What comes first in stochiometry?
= metal
2. What is 2 hydrogen and 1 oxygen?
=H2O
3. How many groups are there in =the periodic table?
8 groups
4.  what is lattice structure?
=when sodium reacts with chlorine, billions, of sodium and chloride ions form but they do not stay in pairs
5. 2+(-1)=
=1 ]]> 2018-02-26 02:31:08 UTC https://padlet.com/goldbert_dy/hgbah1sonwdy/wish/235193674 Iwan https://padlet.com/goldbert_dy/hgbah1sonwdy/wish/235193957 1. what is an ionic bond?
A1)
2. what is an ion?
A2)
3.  what is a compound? 
A3) 
4.

]]> 2018-02-26 02:32:44 UTC https://padlet.com/goldbert_dy/hgbah1sonwdy/wish/235193957 Azad yi_shuen_cheon https://padlet.com/goldbert_dy/hgbah1sonwdy/wish/235194252 1) How many Magnesium and oxygen are there in MgO?
A1) 1 magnesium and 1 oxygen
 2) Which side is metal on a periodic table?
A2) left 
3) Why is there a zig zag line on a periodic table?
A3) to separate metals and non metals
4)Carbon+oxygen=
A4) Carbon dioxide
5) What is the row called in a periodic table?
A5)Periods]]> 2018-02-26 02:34:23 UTC https://padlet.com/goldbert_dy/hgbah1sonwdy/wish/235194252 Celina and syasya https://padlet.com/goldbert_dy/hgbah1sonwdy/wish/235194317 Q1 - which one comes first if you put hydrogen and sulfur together? 
A1 - hydrogen sulfide 
Q2 - what is proton number?
A2- the number of protons found in the nucleus of an atom
Q3 what is an ionic bond?
A3 - formed through the electrostatic attraction between two oppositely charged ions
Q4 - what are atoms made out of?
A4 - protons, neutrons and electrons 
Q5 - where are protons and neutrons from?
A5 - nucleus 
Q6 - what is electron circle?
A6 - different energy levels that are around the nucleus that is called shells 
Q7 - where are the protons, neutrons and element in nucleus atoms?
A7 - In the centre
Q8 - what is the difference between a mixture and the compound?
A8 - a mixture is when two or more elements mixed together but it is not chemically joined together where as a compound when the elements are chemically joined together 
Q9 - what is an alloy?
A9 - a mixture of two elements, one of which is a metal and it often has properties that are different to the metals they contain.
Q10 - what us solder 
A10 - when a metal wire with a 'low' melting point which means that it is low enough to be melted with a soldering iron 



]]> 2018-02-26 02:34:45 UTC https://padlet.com/goldbert_dy/hgbah1sonwdy/wish/235194317 Chihiro https://padlet.com/goldbert_dy/hgbah1sonwdy/wish/235194345 what is valency of an element
=the valency of an element is is ]]> 2018-02-26 02:34:51 UTC https://padlet.com/goldbert_dy/hgbah1sonwdy/wish/235194345 Yi Shuen yi_shuen_cheon https://padlet.com/goldbert_dy/hgbah1sonwdy/wish/235194983 1) 2 examples of elements? 
1A = Oxygen, Carbon Dixoide
2) 2 example of compunds? 
2A = Water, Salt
3) Solute + Solvent =? 
3A = Solution
4) 12/6 C = ?    4A = Carbon
5) 16/8 O = ?    5A = Oxygen]]> 2018-02-26 02:38:09 UTC https://padlet.com/goldbert_dy/hgbah1sonwdy/wish/235194983 https://padlet.com/goldbert_dy/hgbah1sonwdy/wish/235196593 Eli:
 1/what is ionic bonding?
 
2/ what is metal made of?

3/ what is atomic structure?


Aleem:
1) what is meant by a proton number?

2) What is valency of an atom?

3) How many groups are in the periodic table?


]]> 2018-02-26 02:47:17 UTC https://padlet.com/goldbert_dy/hgbah1sonwdy/wish/235196593 Khairul https://padlet.com/goldbert_dy/hgbah1sonwdy/wish/235196978 1.What is meant by an alloy
- A metal made by combining two or more metallic elements , especially to give greater strength or resistant to corr]]> 2018-02-26 02:49:26 UTC https://padlet.com/goldbert_dy/hgbah1sonwdy/wish/235196978